Effects of Coal Desulfurization on Ultimate, Proximate, Calorific Value and Functional Group TransformationsSyarifah Nursyimi Azlina Syed Ismail, Khudzir Ismail, Azil Bahari Alias, A. Razi and Mohd Azlan Mohd IshakE3S Web Conf., 589 (2024) 03004DOI: https://doi.org/10.1051/e3sconf/202458903004